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The posterior interosseous nerve (or dorsal interosseous nerve/deep radial nerve) is a nerve in the forearm. It is the continuation of the deep branch of the radial nerve, after this has crossed the supinator muscle. It is considerably diminished in size compared to the deep branch of the radial nerve.
Unlike carpal tunnel syndrome, radial tunnel syndrome does not present tingling or numbness, since the posterior interosseous nerve mainly affects motor function. [5] This problem is often caused by: bone tumors, injury (specifically fractures of the forearm), noncancerous fatty tumors (lipomas), and inflammation of surrounding tissue. [5]
The arcade of Frohse is a site of interosseous posterior nerve entrapment, [2] and is believed to play a role in causing progressive paralysis of the posterior interosseous nerve, both with and without injury. The arcade of Frohse was named after German anatomist, Fritz Frohse (1871–1916). [citation needed]
The radial nerve arises from the posterior cord of the brachial plexus. The posterior cord takes nerves from the upper, lower, and middle trunk, so ultimately the radial nerve is formed from the anterior rami of C5 through T1. [1] The radial nerve passes through the axilla, which makes it susceptible to injury.
The increased pressure in the synovial sheath is known to directly or indirectly compress the posterior interosseous nerve of radial nerve. [14] Also, the extra pressure causes synovitis which results in pain in the dorsal part of the wrist.
Nerve compression syndrome, or compression neuropathy, or nerve entrapment syndrome, is a medical condition caused by chronic, direct pressure on a peripheral nerve. [1] It is known colloquially as a trapped nerve, though this may also refer to nerve root compression (by a herniated disc, for example).
Anterior interosseous syndrome or Kiloh-Nevin syndrome I is a medical condition in which damage to the anterior interosseous nerve; Deep branch of radial nerve, also known by the Latin term nervus interosseus dorsalis; Posterior interosseous nerve, or dorsal interosseous nerve, is a nerve in the forearm
Lead poisoning–Wrist drop is associated with lead poisoning due to the effect of lead on the radial nerve. [1] Persistent injury–Persistent injury to the nerve is a common cause through either repetitive motion or by applying pressure externally along the route of the radial nerve as in the prolonged use of crutches, extended leaning on the ...